Ooooooh so that's why he wanted everyone else to stop any further research and experiments on AI for at least 6 months, to give him time to catch up with his new company!!!
By "falling-out" you mean he tried to take over OpenAI but failed. Musk even tried to claim OpenAI "had fallen fatally behind Google" to validate his takeover.
https://www.semafor.com/article/03/24/2023/the-secret-histor...